Duplex thrust device for friction-clutches.



I A. LAMBERT. DUPLEX THRUST DEVICE FOR FRICTION ULUTGHES.

APPLICATION FILED FEB. 27, 1909.

938,772. Patented Nov. 2, 1909.

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A. LAMBERT. DUPLEX THRUST DEVICE FOR FRIGTION GLUTGHBS.

APPLICATION FILED FEB. 27, 938,772.

Am I! I if A. LAMBERT. DUPLEX THRUST DEVICE FOR FRICTION ULUTOHES.

ASHER LAMBERT, or NEWARK, NEW JERSEY.

DUPLEX TI-IRUST DEVICE FOR FRICTION-CLUTCHES.

Specification of Letters Patent.

Patented Nov. 2, 1909.

Application filed February 27, 1909. Serial No. 480,321.

To all whom it may concern:

Be it known that I, ASHER LAMBERT, a citizen of the United States, residing at No. 1 Johnson avenue, Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Duplex Thrust Devices for Friction-Clutches, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The present invention relates to means for actuating the clutch-mechanisms of hoisting machine drums in cases where two drums are mounted upon the same axial line. Great economy of space in the framing of a hoisting machine is secured by thus mounting two drums, but in such cases it has been heretofore common to actuate the clutch of each drum by a clutch-pin in the shaft-end nearest to such clutch; so that if both clutches were manipulated by a single operator he could only actuate the clutch-pin farthest from him by connections extended across the entire width of the frame, at one side of the gears and flanges of the drums.

The object of the present invention is to avoid such lengthy outside connections by making the shaft hollow or tubular within one of the drums and extending connections through such hollow shaft, to actuate the clutch pin of the other drum, by which means both the clutches can be actuated independently from one end of the shaft and without the use of any outside connections.

The construction comprises various details of construction, including the division of the shaft within a bearing between the two drums to allow the removal of either drum from its bearings separately, the gripping of one or both of the shaft-sections in its bearings to hold it stationary with the shaft and its clutch revolving thereon; the connection of a so-called claw with the outer hearing which carries the hollow shaft, or directly with the end of the hollow shaft, and furnishes such a claw with external and internal threads upon which internal and annular screws can be fitted and operated directly upon pins inserted through the claw and having connections through the tubular shaft to actuate the clutches of the two drums.

It is common in hoisting machines to fasten a socalled claw upon the outer bearing of the drum and insert a thrust-screw through the center of the claw to move a central thrust-pin or clutch-pin and thus actuate the clutch of a drum upon the shaft; but in the present invention an additional series of push-pins is inserted longitudinally through the claw around the center screw, and operated with separate connections to actuate a clutch separate from that actuated by the central push-pin.

Instead of applying the two clutch-shifters to the extreme end of the shaft, one of the shifters may be mounted between the outer bearing and the adjacent end of the drum, and operated by an annular screw or nut to actuate the adjacent drum-clutch,

while the other is actuated through the interior of the shaft by a central clutch-pin.

The invention may be applied to a shaft in one piece, or divided into sections to facilitate the removal of each drum from the frame separately, and the shaft or either of its sections may be stationary or rotary, as preferred.

The invention will be understood by reference to the annexed drawing, in which Figure l is a plan of a hoisting engine with the improvements applied thereto; Fig. 2 is a longitudinal section of a divided shaft with two drums thereon, with the clutchshifting means mounted upon a claw upon the end of the shaft; Figs. 3, 4 and 5 show modified constructions for the divided shaft and the clutch-shifters, the parts being in section at the center line of the shaft where hatched. Fig. 6 is an end View of-the claw shown in Fig. 3; Fig. 7 an end view of the claw shown in Fig. et; and Fig. 8 an end view of the claw shown in Fig. 5, the latter being of the form already long used.

In Fig. 1, a designates the bed of the hoister, b the bearings at the outer ends of the drums, and c the intermediate bearing which supports the shaft-sections (Z, d, be tween the drums e and f.

The drums shown in Fig. 2 are of the ordinary construction to turn loosely upon the shaft and provided upon one end with a friction-cone g to engage a complemental cone h or 2' which is supported and rotated by an attached gear j. The gears are rotated by engines A and a pinion-shaft B. The frame also carries a boiler C.

The friction-cones form clutches when pressed together, the usual keys Z and m being shown inserted through slots in the shaft each in contact with a collar 7?. at the ends of the drums, and each key receiving an end thrust from a manuallyoperated clutchshifter by a clutch-pin 0 or p. Ballbearings n su port the end thrust when the drum is clutc ed to its gear j.

In Fig. 2, the sections (Z, (Z' of the shaft are shown divided from one another in the bearing 0 and collared, as with collars q, in the bearings 11 and c, to prevent end movement; and are held normally stationary by clamping-caps upon the bearings.

In Fig. 2, the shaft (Z is shown tubular and its outer end extended beyond the hearing 6, and a so-called claw r is screwed upon the end of the shaft and clamped rigidly by bolts 8 inserted through split lugs. The claw has a hub provided with an external thread t and a boss projected from the outer end of such hub and provided with an internal thread a. A central thrustscrew '0 is inserted in the thread u, and the loose pin 0 is inserted between the point of the same and the key Z, serving both as a clutch-pin and a push-pin. A loose sleeve w is fitted within the tubular shaft (Z and has upon its inner end a cone w which presses at its inner end against the loose clutch-pin p which engages the key m.

At its outer end, the sleeve w has a head w perforated for the passage and guidance of the push-pin 0, and three sliding studs w are shown inserted through the hub of the claw between the inner and outer threads, and their inner ends in contacts with the head 4,0 The sleeve acts as a push pin for the clutch-pin p.

An annular screw or nut t is fitted to the external thread t, and has a collar t provided upon its inner side with a hardened steel facing, to contact with the outer ends of the push-pins m.

The screws o and t which actuate the push-pin 0 and the sliding studs :0 are provided with arms or handles 3 to turn them independently. The push-pin 0 and the key Z form a connection between the central screw 1) and the clutch-mechanism upon the nearer or tubular shaft (Z; while the sliding studs :12, the sleeve 10, the clutch-pin p and key m form a connection between the annular or external screw t and the'clutch-mechanisms upon the other or farther shaft.

It will be understood that the shaft cl, the claw carried thereby and all the clutchshifter devices mounted upon the claw, as well as the sleeve to inside the tubularshaft, are stationary, except when adjusted or moved by the handles y.

The construction thus confines the conhas been heretofore provided to operate two clutclrconnections through the interior of a shaft, as is shown upon the tubular-shaft cl.

In Fig. 2, the claw upon which the screw clutch-shifters are mounted is shown secured directly upon the end of the drumshaft, and both of the clutch-shifters are mounted upon such claw, and the annular screw or nut 25 is used to operate the pushpin 9 and the key m for the farther drum. In Fig. 3, a modification is shown in which one of the clutch-shifters is mounted upon the bearing 6 between such bearing and the end of the drum 6. In such case, a hub having an external thread 6 is secured rigidly to the bearing 6, as shown in Fig. 5, and the annular nut 23 is constructed to press directly upon the collar a which contacts with the ball-bearing at the outer end of the drum. The hub is commonly secured to the hearing by the lugs and bolts. lVith this construction, the sleeve 20 acts merely as a straight push-pin, and is formed with cones a and w at opposite ends, and the screw 4) presses upon the outer cone u when it is turned, and thus operates the clutch of the drum f instead of the nearer drum 6, as with the con struction shown in Fig. 2.

In Figs. 2 and 3, the sections (Z, d of the drum-shaft are both held stationary and do not therefore require any extended wearing surface where they are supported in the bearings; and it is obvious that the removal of the caps of the bearings permits either of the drums and drum-gears, with the shaft section upon which it revolves, to be removed from the bearings for repairs or replacement without disturbing the other drum and its gearing connections.

Fig. 4 shows an alternative construction for the sectional shaft and its hearings, in

which the section d of the shaft is shown and with an enlarged collar 03 upon the end, with anti-friction washers d between the same and the inner end of the bearing.

In Fig. 4 the clutch-shifters are shown of the same organization as in Fig. 2.

Fig. 5 shows the shaft with both its sections made to revolve in their bearings and the gears j attached thereto, the bearings being made-of sufficient length to provide for wear upon the journals and all of the shaftjournals which require it formed with the annular grooves and rings d to resist end thrust.

The key m for the farther drum f is shown operated by a long push-pin 12' extended entirely through the shaft-section (Z and pressed against the clutch-pin p by a central screw 0), but the claw r to support such screw is secured to the bearing Z) in order to hold it stationary, as the adjacent shaftsection (Z revolves and could not, therefore, carry the claw. Fig. 8 shows the ordinary construction of such claws, with three feet 2 to bolt to the bearing 1). Where revolving shafts are thus used, one ofthe clutchshifters is mounted upon the inner side of the bearing 6, as shown at t, t, in Figs. 3 and 5; and its rotary member presses directly upon the collar 12 at the end of the drum.

The illustrations show that the invention is applicable to actuate the clutches of two drums mounted upon the same axial line, without any external connections from the clutch-shifters to the drums, thus enabling an operator at the end of one drum to operate both the clutches by direct internal connections thereto.

The shaft may obviously be continuous instead of divided in the center bearing, and a center bearing can be dispensed with if such a continuous shaft be made of suitable strength to carry two drums and their clutching appliances.

Having thus set forth the nature of the invention what is claimed herein is:

l. The combination, with two drums mounted adjacent upon the same axial line, of gearing to rotate the drums, two clutches for engaging the gearing with the drums independently, two separate clutchshifters mounted at the outer end of one of the drums for actuating the two clutches, and one of the shifters having means operating through the center of the said drum to actuate the clutch of the other drum.

2. The combination, with two drums and a divided shaft supporting them in the same axial line, of gearing to rotate the drums, two clutches upon the shaft for engaging the gearing with the drums independently, two screw clutch-shifters at the outer end of one of the drums, provided with connections inside the shaft to operate upon the two clutches, and means for turning the two screws separately to clutch either of the drums with the gearing independently of the other drum.

3. The combination, with two drums and a divided shaft supporting them in the same axial line, of gearing to rotate the drums, two clutches upon the shaft for engaging the gearing with the drums independently, two screw clutch-shifters at the outer end of one of the drums to operate the clutches, the shaft within said drum being tubular and being supported by a bearing near the end of the drum, a stationary claw at the end of said tubular-shaft, one of such clutch-shifters consisting of a central screw carried by the claw with connection to one of the clutches, and the other clutchshifter consisting of a male screw held stationary upon the said bearing with a nut movable thereon, and connection from said nut to the other clutch, whereby either drum may be clutched to the gearing independent y.

4. The combination, with two drums and a divided shaft supporting them in an axial line, of gearing to rotate the drums, two clutches upon the shaft for engaging the gearing with the drums independently, two screw clutch-shifters at the outer end of one of the drums to operate the clutches, the shaft within said drum being tubular, a stationary claw at the end of said tubularshaft provided with external and internal screw-threads with internal and external screws fitted to the said threads, and means operating through the tubular-shaft for con necting the two clutches with the external and internal screws, whereby either drum may be clutched to the gearing independently of the other.

5. The combination, with two drums and a divided shaft supporting them in an axial line, of gearing to rotate the drums, two clutches upon the shaft for engaging the gearing with the drums independently, two screw clutch-shifters at the outer end of one of the drums to operate the clutches, the shaft within said drum being tubular, a stationary claw at the end of said tubular shaft provided with external and internal screw-threads, sliding-studs inserted longitudinally through the claw between such internal and external screw-threads, and means connecting such studs with the clutch of one of the drums, an inner push-pin in the center of the shaft with connections to the other clutch, an internal screw in the center of the claw to press upon the inner push-pin, and an annular screw or nut fitted to the external thread upon the claw and having a collar to press upon the slidingstuds, whereby the clutches are independently actuated by two screws at one end of the shaft.

6. The combination, with two drums and a divided shaft supporting them in an axial line, of gearing to rotate the drums, two clutches upon the shaft for engaging the gearing with the drums independently, two screw clutch-shifters at the outer end of one of the drums to operate the clutches, the shaft within said drum being tubular, a bearing clamping such shaft at the outer end of the drum with the shaft projected through the same, a claw secured upon the end of the shaft and provided with ex ternal and internal screwthreads, internal and annular screws fitted to such threads, and connections from such screws through the interior of such tubular shaft to the two clutches, to connect the drums separately with the gearing.

7. The combination,with two drums mounted in an axial line, of a center bearing between the drums, and bearings at their outer ends, a sectional shaft mounted removably in the said bearings with the division of the sections in the center bearing each section carrying one of the said drums, a rotating clutch mounted upon each of the said shafts to rotate one of the drums, two clutch-shifters mounted upon one of the outer bearings with connections for engaging the two shifters with the two clutches independently, the shaft-section in said bearing being tubular, and one of said connections arranged and operated through the tubular shaft-section of one drum to actuate the clutch of the other drum upon the other shaft-section.

8. The combination,with two drums mounted in an axial line, of a center bearing between the drums, and bearings at their outer ends, a sectional shaft with its sections mounted removably in the said bearings with the division of the sections in the center bearing, and the ends of the sections being collared in the said center bearing to resist end thrust, a drum mounted to turn upon each section, a rotating clutch upon each section, two clutch-shifters mounted upon one of the outer bearings the shaft-section in such hearing being tubular, and connections from the shifters for actuating the two clutches separately, one of said connections extending ary, and one section being tubular and projected beyond the outer bearing and having a claw secured thereon and provided with external and internal screw'threads', drum and a rotary clutch fitted to turn upon each of the sections, an inner push-pin'and thrustscrew extended through the center of the claw with connections to the clutch upon the tubular shaft, sliding studs inserted through the claw, with connection to the clutch upon the farther shaft, an annular nut or screw fitted to the external threadof the claw to actuate such sliding studs, and

means for turning the thrust-screw and the annular nut independently, as and for the purpose set forth.

10. The combination, with two drums mounted in an axial line with bearings between and outside the drums, of a divided shaft with one section stationary and tubular and the other section rotary and projected beyond its outside bearing and provided with a winch, clutchesupon the respective shaftsfor engaging the drums independently, gearing for rotating the clutches continuously, and two clutch-shifters at the outer end of the tubular shaft, one of said clutch-shifters having connections operating through the stationary tubular shaft to connect the drum with its clutch upon the rotary shaft.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ASHER LAMBERT. Vitnesses iorxr. L. HATFIELD, T. M. lVA'rson, JR. 

